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[2003:e4:1f14:7f00:f22f:74ff:fe1f:3a53]) by smtp.gmail.com with ESMTPSA id g23-20020a50ee17000000b0055971af7a23sm75332eds.95.2024.02.01.10.49.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Feb 2024 10:49:18 -0800 (PST) From: Thierry Reding Date: Thu, 01 Feb 2024 19:49:07 +0100 Subject: [PATCH net-next 3/3] net: stmmac: Configure AXI on Tegra234 MGBE MIME-Version: 1.0 Message-Id: <20240201-stmmac-axi-config-v1-3-822e97b2d26e@nvidia.com> References: <20240201-stmmac-axi-config-v1-0-822e97b2d26e@nvidia.com> In-Reply-To: <20240201-stmmac-axi-config-v1-0-822e97b2d26e@nvidia.com> To: Alexandre Torgue , Jose Abreu , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, Thierry Reding X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=1341; i=treding@nvidia.com; h=from:subject:message-id; bh=NJ6QmQ9rSuyu2yILzTMeD+XilmAw5wEYJDPvDZo2/VA=; b=owEBbQKS/ZANAwAIAd0jrNd/PrOhAcsmYgBlu+ep1zJWpEM8HRzktM8KpsERNnutRk7N84dvz K2El6DKvMuJAjMEAAEIAB0WIQSI6sMIAUnM98CNyJ/dI6zXfz6zoQUCZbvnqQAKCRDdI6zXfz6z ofTjD/9vqkLXf0KsRrAGJFdVsvmQwB4UULEK0xMOneRYgY1j7/xcxTaqvOZfJ81Z9hxI/U7CDRx XvwAIYUqbi66duOyf/viRcLGYwAWCsFdn8zvMgsM004MjLki6BhICcLabpaXoYQSwC9QtKWV4Qp JIHve3g6rlXez1V4SLhClwwXJRsw7iyHTeiVc9SYVEapCIaZmEJpgLNZqgQxgP/uxME4k6wwNS3 6Zkon2xpBLVxxdw5dRRUVdWdw56JT1Xh229MaoLARsWUtaJmjpC0HSK1EBfHLzsV3fN9O58Dq9u 0xVzUsOkHlvhUVPvqbJEgpzrjHaL3w4mfkpFxoDfP7qUnJKYZbFwKwl7sko4NgeYz/SQ+fiNXh1 dIPA1FXHrHq6NyeO9/3MwKkuTiTWS1vpDhUbTXQUFzeCyFmakx9uk63lrM7fe2v3zSxmNGCBtyx TW3atIO720/GQc7okk8LM0MXlpg+UPEJYtQp7/G+6SludKy6yLf7v1gz8ovrQdfc0aeu8YaYahh +Uq35mjGpOTsDo7sYM+eONXk5zGkCaoNZCvleBvCaLJIkQvm+g1/3wJ8LeBjXNidPSGfBMsyxM+ B7ePsc1guQNfMU1CjQITNzqu4fV/Hj5fepo+1mQmnsYmAjK/0ZA2hASSBW9cQ0GPsyxNSr6zXNX kCD605YF4Kg+Uig== X-Developer-Key: i=treding@nvidia.com; a=openpgp; fpr=88EAC3080149CCF7C08DC89FDD23ACD77F3EB3A1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240201_104922_220208_031661F2 X-CRM114-Status: GOOD ( 13.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Thierry Reding Allow the device to use bursts and increase the maximum number of outstanding requests to improve performance. Measurements show an increase in throughput of around 5x on a 1 Gbps link. Signed-off-by: Thierry Reding --- drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c index bab57d1675df..b6bfa48f279d 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c @@ -199,6 +199,12 @@ static void mgbe_uphy_lane_bringup_serdes_down(struct net_device *ndev, void *mg writel(value, mgbe->xpcs + XPCS_WRAP_UPHY_RX_CONTROL); } +static const struct stmmac_axi tegra234_mgbe_axi = { + .axi_wr_osr_lmt = 63, + .axi_rd_osr_lmt = 63, + .axi_blen = { 256, }, +}; + static int tegra_mgbe_probe(struct platform_device *pdev) { struct plat_stmmacenet_data *plat; @@ -284,6 +290,9 @@ static int tegra_mgbe_probe(struct platform_device *pdev) if (err < 0) goto disable_clks; + /* setup default AXI configuration */ + res.axi = &tegra234_mgbe_axi; + plat = devm_stmmac_probe_config_dt(pdev, &res); if (IS_ERR(plat)) { err = PTR_ERR(plat);